Black Forest Ultra 100k Logo

Black Forest Ultra 100k

Sun, Oct 3, 2027
In 334 days
North Bend, PA
86 Hyner Park Road

On this date: rain 2 of the last 10 years

2025

46–72°F

dry

2024

46–68°F

dry

2023

53–78°F

dry

2022

38–54°F

dry

2021

53–68°F

rain

2020

38–55°F

dry

2019

51–60°F

rain

2018

55–68°F

dry

2017

49–69°F

dry

2016

50–65°F

dry

Best months to race in Pennsylvania →

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About this race

One of the toughest 100k trail ultras in the Northeast. Midnight start. No crews. No pacers. No spectators. Diabolically epic!

Experience the brutal yet stunning beauty of the Black Forest Trail deep in the mountains of the Pennsylvania Wilds. Climb to astounding views of the surrounding peaks and valleys and run through an assortment of forest types ranging from pine plantations, giant hemlocks and red spruce - all in the peak of fall colors. But beware, some of these beautiful vistas require climbing elevation gains of over 1,000 ft in under a mile! The course is a lollipop with over 13,400 ft of elevation gain; this is a tough and taxing course without a doubt and to add a twist to the equation, the course reverses each year so that the majority of elevation gain alternates from the back half of the course to the front half. If that monkey wrench wasn't sufficient already, the race starts at midnight in the inky blackness and you will have a strict 19 hours to complete the course! 

Not hard enough you say? Here's a few more layers of crazy. No crews. No pacers. No spectators. Some are calling this the evil and twisted step brother of the Worlds End 100k. No matter how you classify this beast, be prepared to exorcise your demons!

Course map

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